Scraper for condensers.



H. P. SELICK. SGRAPBR PQE CONDENSERS. APPLICATION FILED JAN, 2o, 1912.

Patenti-2d Sept, 3,

2 SHEETS-SHEET l.

Lwmm

VVITNESSES ATTORNEYS Alo Unirnn s'rArns ra'rnmforrrcn.

HENRY P. cTHICK, 0F STEUBENVILLE, OHIO.

sorteren Fon vconnnl vsnrss.

The primary object of niy invention is t0 provide a scraper for removing slime, inerustations and other -niattei'that forms upon condensing pipes due to the running water or atlnospl'ieric conditions, such inerustations impairing the efliciency of the condenser and necessitating a' cessation in the operation of the condenser' from time to time in order that it can be cleaned.

Another objectof this invention is to provide a scraper that can be advantageously used in connection With the condensersof ice plants, the scraper being arranged whereby it can be intermittently operated to prevent the format-ion of a coating upon the condenser' pipes, the operation of the scraper not interfering with or retarding the operation of the condenser. y A further object of this invention is to provide a Scraper rnade of standard niaterials and equlpped with yieldable Scraping blocks or blades that will not injure the condenser pipes.

A still further objectofthis invention is to provide a scraping machine that is durable, easy to install arid highly eicient for the purposes forA which it is intended.

With the above and other objects in view7 the invention resides in the novel construction, eonkbination and arrangement of parts to be hereinafter. speciically described and then `claimed.

Reference will now be hadto the drawings, wherein:-

Figure l is a side elevation of the scraping device, Fig. 2 is an end view of the same, Fig, 3 is an enlarged horizontal sectional viev of a portion of the device, Fig. 4 is a vertical sectional view of the device, Fig. 5 is an enlarged elevation ot one of the Scrapers, Fig. G is a longitudinal sectional view of a modified form 'of scraper,

Specication of Letters Iatent.

v Application led .Tanuary 20, 1912. Serial No. 672,858.

Patented Sept. 3., 1912.

rig. 7 is a longitudine seo-.imi View of al@ scraping device, and Fig. 8 is a plan .of the i saine.

The reference nt'nnerals l denote vertical parallel steam inlet pipes and spaced apartfrom said pipes are vertical parallel steain outlet pipes '.lhe pipes l and 2. are connected by longitudinal parallel condensing tubes 3.

Arranged longitudinally beneath the tubes 3 is atraclr 4 and niovably mounted upon said track is a. scraper truck approximatelyhalf the length of the 'condenser tubes 3. The scraper truck coin prises sets ot vertical scraper holders generally designated 5 and G, said holders having the vupper and lower ends thereof connected by longitudinal parallel angle bars 7 'and by diagonally'disposed braces S.

Each scraper holder comprises side plates 9 having the inner sides thereof provided with sets of vertical angle barslO forming y vertical channels 1l..- The Aupper and lower ends ot the angle barslO and the side plates 9 are connected by horizontal-plates 12 and 13. 'lhe latter are provided with bearings 14 for revoluble truck wheels 15 that travel i upon the track Ll.

Arranged within the channels il ot each holder are Scrapers7 comprising blocks 1G having the confronting faces thereof recessed, as at 17, each recess having a curved wall representing a quarter of the. circunr ference ot one oi' the tubes El, whereby the blocks 10 will surround or encompass the tubes 3, as best shown in Figs. Z'anfl l. The blocks lo are yieldable in a lateral plane through the medium' of springs 1S secured to the outer sides of the bloc s 1G and en gagingthe side plates i).I The springs 1S .are lint, as shown in Fig. 5 and in lieu of these springs'coiled compres ionsprings 19 can be utilized, as shown in Fig. G, in which instance, guide bolts )Oare mounted in the blocks 1G and extend througlL ol'ienings 21 provided therefor in the side plates f). The guide bolts are provided with nuts 2:; and the springs 1f) encircle .the bolts between the side plates 9 and said blocks, the inner vconvoluli'ms of said springs extending into sockets provided therefor in said blocks. Arr ged 'between the sets of condenser are bearings 24 for alongtiulinal: cylinder 25 that is approximately half the length ol'- the condensmg f devices. The outer endlot ltubes adjacent 1.o thesteam inlet pipes '1,

the cylinder 25 is closed by ahead 26 and is provided with an inlet and outlet pipe 27.

The inner end of the cylinder has a stutiing' YThe opposite end of the piston vrod 30, is

mounted by a transverse pin 32 between two,

straps 33 carried by the confronting sides of the scraper holders 6.

Steam, airor water or any suitable fluid can be admitted to the cylinder 25 for moving the piston head 31 and the piston rod 'ytherein. W'hen steam is admitted to the pipe 29, the piston rod 30 is drawn'into the cylinder'and moves the scraping truck from one end of t-he condensing device to the opposite end thereof, the steam in the outer end of the cylinder exhausting through the pipe 27. By reversing the -course of the steam in the cylinder, that is, admitting steam by the pipe 27 and allowing the steam in the inner end of the cylinder to exhaust through the pi e 29, the scraper truck can again be shifted relatively to the condensing tubes 3. It is in this mannerthat the scraper truck p can be intermittently shifted to prevent the accumulation of slime or other matter upon the condensing tubes 3,v and as the scraping blocks 16 yieldably engage said tubes, said blocks remove matter that accumulates upon the surface of the condensing tubes.

can be utilized for reciprocating the scraping truck and. it is obvious that thetruck can include a greater number of scraper holders whereby the device can be used in connection with a large condenser. Itis obvious that the Scrapers can be removed from the holders and thoroughly cleansed or renewed.

While in the drawing there are illustrated' 'scraping' holders positioned at each end of said truck, 'resilient supported Scrapers ar-l ranged in said holders and capable .of engaging 'with t-he periphery of 'the tube for scraping the same when the truck is reciprocated.'

2. An apparatus for scraping the tubes of boilers and condensers comprising a reciprocatory truck, sets of vertically disposed 'scraper holders carried by said truck and op.-v

positely disposed sets of Scrapers carried by rocatory truck, a vertically 'each holder' and capable of -engaging the periphery of the tubes by scraping the same when the truck is recprocated. 3. An apparatus f or scraping the tubes o boilers and condensers com rlsing a recip- 'sposed scraper holder carried at each end. of said truck, and two sets of Scrapers arranged in each of said holders, the holders of one s et project ing toward the holders of the other set and capable of engaging with the periphery of the tubes yfor scraping the'same when the truck is reciprocated. 4. An apparatus for scraping the tubes of boilers and condensers comprising a reciprocatory truck, a've'rticallv disposed scraper holder carried thereby, and two sets of Scrapers supported by said holder, the Scrapers 'of one set extending toward the Scrapers of the other set and said scrapers capable of"'cleaning -the periphery1 ."0f :the tubes When a truck 1s s hifted.- x.ef'ff 5. An apparatus for scrapingthe t bes of boilers and condensers' comprising afreciprocatory truck, means for shifting the truck, a vertically disposed scraper holder carried by the truck, two ysets of Scrapers arranged in said holder,'tlie"scrapers of one set extending toward the scra ers of the other set and sai'd Scrapers capa le of cleaning the tubes when the 'truck is shifted and. means for.resiliently connecting the truck to said holder. Other means than the cylinder and piston 6'. AAn apparatus for scrapingthe tubes of boilers and condensers comprising a reciprocatory truck, a vertically disposed scraper holder arranged at each end of said truck, two sets of scrape-rs mounted in each of said holders, the Scrapers of each set extending toward the Scrapers of the other set and the sera 'ers 0f each'holder capable of en gaging t e periphery of the tubes for cleaning them W en the truck is shifted.

An apparatus for scraping the tubes of boilers and condensers comprising a reciprocatory truck, a verticallydisposed scraper holder arranged at each end of said truck, two sets of Scrapers mounted in each of said holders, the Scrapers of each set 'extending toward the Scrapers of the other set and the Scrapers of .each holder capable of engaging the periphery of the tubesfor cleaningthem when the truck is shifted, and means vfor resiliently connecting the Scrapers to the holders.

' In testimony'whereof I aix my signature y in the presence of two witnesses.

f .HENRY .1). SELICK.

Witnesses: y

' .MAX H. Snonovrrz,

KARL H. BUTLER. 

